鞘的

For more investigation on the linkage-structure of elytra, the opening-closing process of elytra is recorded. Besides, the strength of linkage between the elytra was measured, and Protaetia brevitarsis has the strongest coupling force. At last, the elytra linkage-structure model was analysed by simulating its movement and analyzing its structure using Pro/Engineer, it is proved that the structure is especial and efficient.

本文为了更好地研究此鞘翅间联接锁定机构，对甲虫鞘翅的瞬间开合过程进行了拍摄；还对此机构的联接强度进行了测定，发现甲虫鞘翅间联接力都要远远大于甲壳虫它自身的重量，其中白星花金龟的联接强度最高；最后通过几何建模，对联接机构进行运动模拟仿真及结构有限元分析，证明了甲虫鞘翅联接机构的特殊性和高效性。

This thesis focuses on beetle Cybister tripunctatus in addition to some other species of beetles and studied the elytron's micro-structure. We found that there are many concaves、hollows and holes on its structure; the configuration of this material is compound samdwich; the linkage-structure between elytra adopts the concave-protuberant mesh joint with some bristle.

本文以东方龙虱为重点研究对象，并综合了四个科的十个物种，通过对甲虫鞘翅微结构的观测，发现东方龙虱鞘翅表面遍布着很小的凹坑；从其鞘翅断面来看，内部存在着许多空腔和孔道结构，而且甲虫鞘翅是复合层状结构；对鞘翅间联接处研究发现，联接机构采用了凹凸啮合结构，在局部区域存在微小毛刺和突起结构来增加摩擦接触。

Time however, and the Satisfaction I had, that I was in no Danger of being discover'd by these People, began to wear off my Uneasiness about them; and I began to live just in the same compos'd Manner as before; only with this Difference, that I used more Caution, and kept my Eyes more about me than I did before, least I should happen to be seen by any of them; and particularly, I was more cautious of firing my Gun, least any of them being on the Island, should happen to hear of it; and it was therefore a very good Providence to me, that I had furnish'd my self with a tame Breed of Goats, that I needed not hunt any more about the Woods, or shoot at them; and if I did catch any of them after this, it was by Traps, and Snares, as I had done before; so that for two Years after this, I believe I never fir'd my Gun once off, though I never went out without it; and which was more, as I had sav'd three Pistols out of the Ship, I always carry'd them out with me, or at least two of them, sticking them in my Goat-skin Belt; also I furbish'd up one of the great Cutlashes, that I had out of the Ship, and made me a Belt to put it on also; so that I was now a most formidable Fellow to look at, when I went abroad, if you add to the former Description of my self, the Particular of two Pistols, and a great broad Sword, hanging at my Side in a Belt, but without a Scabbard.

可是，尽管如此，时间一久，我对食人生番的担心逐渐消失了，更何况我确信自己没有被他们发现的危险。所以，我又像以前那样泰然自若地过平生活了。所不同的是，我比以前更小心了，比以前更留心观察，唯恐被上岛的野人看见。特别是，我使用枪时更小心谨慎，以免给上岛的野人听到枪声。天幸我早就驯养了一群山羊，现在就再也不必到树林里去打猎了。这就是说，我用不着开枪了。后来，我也捉过一两只野山羊，但用的都是老办法，即用捕机和陷阱捉到的。因此，此后两年中，我记得我没有开过一次枪，虽然每次出门时还总是带着的。此外，我曾从破船上弄到三把手枪，每次出门，我总至少带上两把，挂在腰间的羊皮皮带上。我又把从船上拿下来的一把大腰刀磨快，系了一条带子挂在腰间。这样，我出门时，样子实在令人可怕。除了前面我描述过的那些装束外，又添了两支手枪和一把没有刀鞘的腰刀，挂在腰间的一条皮带上。

Nodes of Ranvier; saltatory conduction; Schwann cells; oligodendrocytes; myelin basic protein; demyelination; remyelination; myelinopathy; myelinogenesis; myelin-associated protein; myelin sheaths; demyelinating neuropathy; myelin proteolytic protein; chronic inflammatory demyelinating polyradiculoneuropathy; multiple sclerosis; MS

郎飞氏结；跳跃传导；施旺细胞；少突神经胶质细胞；髓鞘碱性蛋白脱髓鞘；髓鞘再生；髓鞘质病；髓鞘形成；髓磷脂-关联的蛋白质；髓鞘；脱髓鞘神经病；髓磷脂溶解蛋白的蛋白质；慢性炎症性脱髓鞘多神经根神经病；多发性脑硬化；MS

Sphingomyelin had no inhibition to human colon cancer cells(HT-29) in vitro, so ceramide and sphingosine, the product of metabolism of sphingomyelin, was thought of having the anticancer effect.

体外实验未发现鞘磷脂对人结肠癌细胞（HT-29）有抑制作用，因此认为鞘磷脂是通过其代谢产物神经酰胺和鞘氨醇发挥抑癌作用的。

To clone new disease gene of CMT, many myelin and myelin-related gene had been analysised by homologue searching. Quaking mouse, one of the mutation mouse with the clinic feature similar to Trembler mouse (the gene mutation mouse of PMP22) with the characterization of demylination in both the central and the peripheral nervous system, its disease gene had just been cloned accession No.

为进一步克隆新的CMT致病基因，在分析出CMT已克隆的基因均为与髓鞘有关的基因后，通过筛选有关髓鞘基因，我们发现，quaking基因突变小鼠因髓鞘形成障碍而出现震颤，其中枢和周围神经均有脱髓鞘，类似于PMP22基因突变鼠"Trembler"的临床表现。

For assisting identification of crude drug Herba Dendrobii. Methods Morphological and histological studies were carried out on 11 medicinal plant roots in Dendrobium Sw. by microstructural observation. The 11 species were divided into three groups according to their stem morphology: a pair fleshy-stem group, including D. chrysanthum, D. crepidatum, D. primulinum, D. hercoglossum, and D. crystallium; b thick-and rigid-stem group, including D. fimbriatum and D. aurantiacum var. denneanum; c node-or inter- node- bulgy-stem group, including D. findlayanum, D. gratiosissimum, D. pendulum, and D. wardianum. The surface descriptions of velamen were conducted for D. fimbriatum and D. aurantiacum var. denneanum which are similar in characters of cross section.

方法利用形态组织学方法，对茎多肉质的束花石斛Dendrobium chrysanthum及其易混的玫瑰石斛D.crepidatum、报春石斛D.primulinum、重唇石斛D.hercoglossum、晶帽石斛D.crystallium；茎粗硬的流苏石斛D.fimbriatum及其易混的叠鞘石斛D.aurantiacumvar.denneanum；茎节或节间肿胀的棒节石斛D.findlayanum、杯鞘石斛D.gratiosissimum、肿节石斛D.pendulum和大苞鞘石斛D.wardianum共11种药用石斛根进行显微结构研究；对根横切面结构相似的流苏石斛和叠鞘石斛，配合进行了根被表面制片观察。

RESULTS: The mild traction group showed angulus anterior individual neuron slightly engorged, neuron and nerve fiber morphous was normal essentially; individual substantia alba demyelinates in fragmentis; medullary sheath and auxiliary fibers of nerve root were hydropsia slightly without conspicuous myelinolysis. The moderate traction group demonstrated myelinolysis change in the spinal cord, and neurofibras lined up chaos, auxiliary fibers disaggregated, neuron dropsy, tigroid body disappeared with karyopycnosis and anachromasis in neurons; nerve root showed myelinolysis. The severe traction group displayed a great demyelination region; anterior motor neurons with karyopycnosis and anachromasis; myelinated nerve fiber of nerve root shrinked, decreased in number, with severe demyelination changes.

结果：轻度牵拉组牵拉侧前角个别神经元稍肿胀，神经元及神经纤维形态基本上正常，个别白质小片状脱髓鞘样改变，神经根髓鞘和轴索轻度水肿，脱髓鞘不明显；中度牵拉组白质有脱髓鞘改变，神经纤维排列紊乱，轴索崩解、断裂；灰质神经元水肿明显加重，前角运动神经原细胞尼氏体消失，核固缩、深染，神经根髓鞘和轴索水肿，局部轻度脱髓鞘改变；重度牵拉组牵拉侧白质为不规则的大片脱髓鞘区，前角运动神经元胞体固缩、变形、核深染，神经根有髓神经纤维萎缩、数目减少，重度脱髓鞘改变。

RESULTS: Olfactory bulb-derived olfactory ensheathing cells adhered to the wall at 24 hours. Olfactory mucosa-derived olfactory ensheathing cells adhered to the wall at 4-5 days. The morphology of the two kinds of cells was similar. Most of them were bipolar and spindle-shaped, and few were tripolar and flat.

结果：体外培养24 h嗅球源性嗅鞘细胞即可贴壁，而嗅黏膜源性嗅鞘细胞多在培养四五天后贴壁，两种来源的嗅鞘细胞形态相似，以双极或梭形细胞为主，少量为3极及多突起形多级细胞，同时夹杂扁平、煎鸡蛋形细胞。

Numerical results show the collisional effects on some physics quantities, such as instantaneous voltages on the electrodes, instantaneous thicknesses of the electron sheathes, spatial distributions of the ion density and the electric field in the sheaths, and instantaneous voltage difference between two electrodes.

数值结果显示了碰撞效应对极板上鞘层的瞬时电压、瞬时电子鞘层厚度、鞘层内的离子密度和动能的空间分布以及两个极板上鞘层电压之差等物理量的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。